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Finding the Fourth Proportional to 658.49, 908.37 and 409.73

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Solution

The fourth proportional to 658.49, 908.37 and 409.73 is: 565.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.49 : 908.37 = 409.73 : x
  2. Step 2: Convert to fraction form
    658.49/908.37 = 409.73/x
  3. Step 3: Cross multiply
    658.49x = 908.37 × 409.73
  4. Step 4: Simplify right side
    658.49x = 372,181.90
  5. Step 5: Solve for x
    x = 372,181.90/658.49
  6. Step 6: Final answer
    x = 565.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.